Given the task definition and input, reply with output. In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).

Context: The is the official currency of Japan. It is the third most traded currency in the foreign exchange market after the United States dollar and the euro. It is also widely used as a reserve currency after the U.S. dollar, the euro, and the pound sterling. The concept of the yen was a component of the Meiji government's modernization program of Japan's economy; which postulated the pursuit of a uniform currency throughout the country modeled after the European decimal currency system.
Before the Meiji Restoration, Japan's feudal fiefs all issued their own money, "hansatsu", in an array of incompatible denominations. The New Currency Act of 1871 did away with these and established the yen, which was defined as of gold, or of silver, as the new decimal currency. The former "han" (fiefs) became prefectures and their mints private chartered banks, which initially retained the right to print money. To bring an end to this situation the Bank of Japan was founded in 1882 and given a monopoly on controlling the money supply., Agio (Italian "aggio") is a term used in commerce for exchange rate, discount or premium., A bank is a financial institution that accepts deposits from the public and creates credit. Lending activities can be performed either directly or indirectly through capital markets. Due to their importance in the financial stability of a country, banks are highly regulated in most countries. Most nations have institutionalized a system known as fractional reserve banking under which banks hold liquid assets equal to only a portion of their current liabilities. In addition to other regulations intended to ensure liquidity, banks are generally subject to minimum capital requirements based on an international set of capital standards, known as the Basel Accords., In finance, an exchange rate (also known as a foreign-exchange rate, forex rate, ER, FX rate or Agio) between two currencies is the rate at which one currency will be exchanged for another. It is also regarded as the value of one countrys currency in relation to another currency. For example, an interbank exchange rate of 119 Japanese yen (JPY, ¥) to the United States dollar (US$) means that ¥119 will be exchanged for each US$1 or that US$1 will be exchanged for each ¥119. In this case it is said that the price of a dollar in relation to yen is ¥119, or equivalently that the price of a yen in relation to dollars is $1/119., The United States dollar (sign: $; code: USD; also abbreviated US$ and referred to as the dollar, U.S. dollar, or American dollar) is the official currency of the United States and its insular territories per the United States Constitution. It is divided into 100 smaller cent (¢) units. The circulating paper money consists of Federal Reserve Notes that are denominated in United States dollars (12 U.S.C. 418)., Finance is a field that deals with the study of investments. It includes the dynamics of assets and liabilities over time under conditions of different degrees of uncertainty and risk. Finance can also be defined as the science of money management. Finance aims to price assets based on their risk level and their expected rate of return. Finance can be broken into three different sub-categories: public finance, corporate finance and personal finance., This is a list of countries by their exchange rate regime ., Subject: list of countries by exchange rate regime, Relation: is_a_list_of, Options: (A) bank (B) country (C) money (D) system (E) term

country